Varicoupler



Oct. 6, 1925- 1,556,388

, D. H. WILSON VARIOCOUPLER Filed Feb, 1925 3 Sheets-Sheet, 1

I I z.- I N ENT R. i 2a m al l Z5071,

MTTORNE 0. H. WILSON VARIOCOUPLER Filed Feb. 1 192 s 3 Sheets-Sheet 2 PIE 3 I J N IN VEN TOR.

- Jaw/Z h lwl pq A ORNEY Oct. 6,1925- D. H. WILSON VARIOCOUPLER Filed Feb. 1925 3 Sheets-Sheet Patented Oct. 6, 1925.

UNITED STATES DAVID E. WILSON, OF MIAMI, FLORIDA.

VARIOCOUPLER Application filed February 17, 1925.

To all whom it may cancel It:

Be it known that I, DAVID H. Vinson, a citizen of the United States, residin at Miami, in the county of Dade and State of Florida, have invented certain new and useful Improvements in Variocoupler, of which the following is a specification.

This invention relates to wireless telegraphy and telephony and has s ecial reference to a variocoupler for sum purposes.

More particular-l the invention relates to what I preferab y term a dynamic octapole variocoupler.

One important object of the invention is to provide an im roved general construction for devices 0 this character.

A second important object of the invention is to provide a variocoupler having an improved pole arrangement.

A third important object of the invention is to provide an improved variocoupler having double the number of poles usually found in such instruments.

A. fourth important object of the invention is to provide an improved variocoupler wherein the poles are divided into sets and in which the winding is such that one set of poles is reversely arran ed with respectto the other so that a ba ancing effect is obtained.

With the above and other objects in view as will be hereinafter apparent, the invention consists in general of certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings and specifically claimed.

In the accompanying drawings like characters of reference indicate like parts in the several views, and:

Figure 1 is a side elevation of a. variocoupler constructed in accordance with this invention.

Figure 2 is a view showing the tubes on which the wire of the variocoupler is wound, the view being partly a section on the line 2-2 of Figure 1.

Figure 3 is a view showing the directions in which the wire is wound on the r0- tatable members of the variocoupler.

Figure 4 is a view showing the direction in which the wire is wound on the elationary members of the variocoupler.

Figure 5 is a wiring diagram of the device, the diagram being shown in connec- Serial No. 9,786.

tioitr with a typical wireless receiving cir cui One typical embodiment of the invention is shown in the accon'ipanying drawings and will be described in detail. It is to be understood, however, that the present disclosure is merely typical of the invention and that the latter may be modified in form and detail to suit different conditions of use.

In the present embodiment there is provided a base 10 of rectangular form and preferably constructed of some suitable dielectric substance such as hard rubber, bakelite, or other well known substance of this class. The base may, however, in some instances, be of metal and, in other instances, may be omitted as when the device is mounted in a cabinet, in which case {)he floor of the cabinet may constitute the ase.

On this base are mounted the guides 11 which are preferably in the form of a pair of parallel strips arranged adjacent to the side edges of the base and extending longitudinally of said base. Slidably mounted on these guides is a pair of L-shaped brackets 12 which are arranged in confronting relation as shown in Figure 1. Close to each end of the base on the center line thereof is a small bracket 13 through which passes the shank portion of an adjusting screw 14 having a knurled head 15 on one side of the bracket and a collar 16 on the other. By this arrangement the screw may be rotated without moving longitudinally in the bracket 13. The threaded portion of each screw is screwed through the uprightpart of a respective L-shaped bracket 12 so that rotation of these screws adjusts the bracket 12 toward and from the center of the base, it being noted that, as the screws are independent, the brackets are independently adjustable.

Secured to the inner face of the upright portion of each bracket 12 is a pair of tubes 17 made of some suit-able dielectric material such as those mentioned above. The tubes of each pair are arranged in parallel spaced relation as can be clearly seen by reference to Figure 2 and also the tubes of one pair are axially a-lined with the tubes of the other pair as can likewise be noted by reference to Figure 2 and to Figure 1.

On the transverse center line of the base is mounted a pair of upstanding brackets 18, each being positioned at a respective side of said base. These brackets having suitable bearing openings in their upper ends to rotatably support a shaft 19, the axis of which intersects the axes of the tubes 17 at ri ht angles thereto. Thus the axes of the tu es and shaft all lie in the same plane parallel to the base 10. On this shaft is mounted a pair of short tubes or rin s 20 of dielectric material. The axes of these tubes are at right angles to the axis of the shaft 19 and intersect the axis of the tubes 17. On one end of the shaft is mounted suitable means for turning the same as indicated by the knob 21 of the dial 22. It will now be plain that the tubes or rings 20 may be rotated between positions at right angles to the tubes 17 and positions in alinement therewith and it is to be noted that the mountin is such that either end of a tube 20 ma be rought, at will, adjacent a respective tu 17.

By reference to Figures 3, 4 and 5 it will be seen that one of the rings is provided with a ri ht hand winding 23 while the other has a le t hand windin 24 in series therewith. Similarly one 0 each pair of tubes 17 is provided with a right hand winding 25 while the other of said pair is provided with a left hand winding 26 and it will be noted from Fi ure 4 that the right hand windings are on iagonally disposed tubes as are the left hand windings. Thus the tubes of an alined pair are wound to opposite hands.

As shown in Figure 5 one end of the winding 25 of one tube is connected to a terminal 27 while the other end of such winding is connected by a wire 28 with the winding 26 of the companion tube on the respective bracket. The remaining end of the winding 26 is connected by a wire 29 with one end of the winding 25 of the alined tube and this winding is, in turn, connected by a wire 30 with one end of the remaining winding 26.

This last winding has its end connected to a terminal 31.

The aerial 32 is connected to a switch arm 33 traversing contacts 34 tapped off the first winding 25 by wires 35 and tapped oif the second windin 26 by wires 36. Similarly the ound 37 is connected to the remaining win ings 25 and 26 by a switch arm 38 traversing contacts 39 which are connected to said windings by wires 40 and 41.

The free end of the secondary winding 23 is connected to a terminal 42 and the free end of the winding 24 is connected to a terminal 43.

Taps 44 and terminals 45 may be also used on the wire 29 and the terminals 42 and 43 are used to connect the variometer to the remainder of a receiving ap aratus such as is shown at 46, it being un erstood that this a showing is merely to indicate one use to which the improved variometer may be put.

From the foregoing it will be seen that the windings 25 and 26 are connected throughout in series. At the same tifneit will be observed that the winding of one stator in each pair is connected in multi le to the winding of the other stator of sai pair.

It is to be noted that the windings shown in Figures 3 and 4 are merel typical and are intended only to indicate irections and not number of turns or size of wire.

It will now be seen that this arrangement constitutes a parallel arrangement of variocou lers wherein the two variocouplers have their magnetic poles inverted with respect to each other and that this inverted condition exists in both stator and rotor elements and persists under all variations in the position of the rotor element. I

Experience has shown that the use of this dynamicoctapole variocoupler in a set eliminates the necessity for variometers, additional honey comb or spider web coils or other like devices such as are commonly used in the better types of radio sets, the same effects being produced as with the more complicated and expensive arrangements.

In tuning with the dynamic octapole variocoupler Figure 5 plainly indicates the different sections that the variocoupler is wound with, and also by the movement of these switches where these said sections may be cut in and out on both fields of the variocoupler. While these two switches can be operated by one movement, I find it is absolutely essential that they should be worked independent of each other in order to cover a large field of distances and stations. For example, if the aerial switch is on No. 1 button and the ground switch is on No. 4 button, New York and all New En land stations come in very clear and loud, ut if ground switch No. 1 is thrown on No. 1 button and aerial switch is placed on No. 5 button, these stations will come up like thunder in the receivers, as will also Mexico city, California and the most distant stations when they are tuned in with the variable condenser.

Experience also shows that this dynamic octapole variocoupler covers a range of distance that have never yet to my knowledge been attained by any other receiving apparatus devised up to date.

In operation I find that by a movement of the rotors I can cut in and cut out lon distant stations without changing the CS1- tion of the points on the dial of the variable condenser. I can also either increase or decrease the volume of sound fromall stations without changing the position of the points on the dial of the variable condenser. After picking up a station faintly I can by move, ment of the point on the dial of the variable condenser from one to fifteen degrees bring the volume of this station up to its peak of loudness.

As already explained, with the addition of these two switches I can make any number of different combinations for bringing up stations, near or far.

I also in the construction of this dynamic octapole variocoupler show a design whereby the field is what I term a complete closed magnetic field that may be strengthened or weakened at will, thereby having an efficiency substantially 100%.

There has thus been provided a simple and efficient device of the kind described and for the purpose specified.

It is obvious that minor changes may be made in the form and construction of the invention without departing from the material spirit thereof. It is not, therefore, desired to confine the invention to the exact form herein shown and described, but it is desired to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is:

1. A variocoupler instrument including a pair of stators having windings connected in series and wound in opposite directions, a pair of rotors having windings in opposite directions and connected in series, each rotor being associated with a respective stator, a common rotatable support whereon said rotors are mounted, and a second pair of stators opposite the first pair and having windings connected in series and wound in opposite directions, the second pair of stators being connected in series to the first pair and having their respective windings in directions opposite to the opposed stators of said first pair.

2. A variocoupler instrument including a pair of stators having windings connected in series and wound in opposite directions, a pair of rotors having windings in opposite directions and connected in series, each rotor being associated with a respective stator, a common shaft whereon said rotors are fixed with their axes parallel to each other and at right angles to the axis of the shaft, and a second pair of stators opposite the first pair and having windings connected in series and wound in opposite directions, the second pair of stators being connected in series to the first pair and having their respective windings in directions opposite to the opposed stators of said first pair.

3. A variocoupler instrument including a pair of stators having windings connected in series and Wound in opposite directions, a pair of rotors having windings in opposite directions and connected in series, each rotor being associated with a respective stator, and a common rotatable support whereon said rotors are mounted, a second pair of stators opposite the first pair and having windings connected in series and wound in opposite directions, the second pair of stators being connected in series to the first pair and having their respective windings in directions opposite to the opposed stators of said first pair, and means to move said stators toward and from said rotors.

4. A variocoupler instrument including a pair of stators having windings connected in series and wound in opposite directions, a pair of rotors having windings in opposite directions and connected in series, each rotor being associated with a respective stator, a common shaft whereon said rotors are fixed with their axes parallel to each other and at right angles to the axis of the shaft, a second pair of stators opposite the first pair and having windings connected in series and wound in opposite directions, the second pair of stators being connected in series to the first pair and having their respective windings in directions opposite to the opposed stators of said first pair, and means to move said stators toward and from said rotors.

5. A variocoupler instrument including a pair of stators having windings connected in series and wound in opposite directions, a pair of rotors having windings in opposite directions and connected in series, each rotor being associated with a respective stator, and a common rotatable support whereon said rotors are mounted, a second pair of stators opposite the first pair and having windings connected in series and wound in opposite directions, the second pair of stators being connected in series to the first pair and having their respective windings in directions opposite to the opposed stators of said first pair, and means to move said stators toward and from said rotors, said last means being arranged to effect movement of each pair of stators independently of the other pairs.

6. A variocoupler instrument including a pair of stators having windings connected in series and wound in opposite directions, a pair of rotors having windings in opposite directions and connected in series, each rotor being associated with a respective stator, a common shaft whereon said rotors are fixed with their axes parallel to each other and at right angles to the axis of the shaft, 21 second pair of stators opposite the first pair and having windings connected in series and wound in opposite directions, the second pair of stators being connected in series to the first pair and having their respective windings in directions opposite to the opposed stators of said first pair, and means to move said stators toward and from said rotors, said last means being arranged to eflect movement of each pair of stators, independently of the other pairs.

7. A variocoupler instrument including a pair of stators having windings connected in series and wound in opposite directions, a

pair of rotors having windings in opposite irections and connected in series, each rotor being associated with a respective stator, a common rotatable support whereon said rotors are mounted, and a second pair of stators opposite the first pair and having windings connected in series and wound in op its directions, the second pair of stators being connected in series to the first pair and having their respective windings in directions opposite to the opposed stators of said first air, the winding of one stator in each pair being also connected in multiple to the winding of the other stator of each pair.

8. A variocoupler instrument including a pair of stators having windings connected in series and wound in opposite directions, a pair of rotors having windings in opposite directions and connected in series, each rotor being associated with a respective stator, 13 common shaft whereon said rotors are with their axes parallel to each other and at right angles to the axis of the shaft, and a second pair of stators opposite the first pair and having windings connected in series and wound in opposite directions, the second pair of stators being connected in series to the first pair and having their res windings in directions opposite to t e opposed stators of said first pair, the winding of one stator in each pair bein also con"- nected in multiple to the winding of the other stator of each pair.

In testimony whereof I ailix my signature.

DAVID H. WILSON.

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